Hello I am using the mgui function in the following way: mgui ( graf_cuenta_margen_interfaz,title=c("Gráficas","Histogramas valoración (No lineal) Cuenta de Margen"),exec="Graficar",argText=list(fecha_adelante="Fecha adelante"),closeOnExec=TRUE,output=NULL,,helps=list(fecha_adelante=paste("La valoración de cuantos días adelante se desea graficar. Las opciones son los días que se hayan escogido en las simulacion:",guiGetSafe("horizontes_text")))) if you notice for the help I am making a string which uses a variable that I can modify helps=list(fecha_adelante=paste("La valoración de cuantos días adelante se desea graficar. Las opciones son los días que se hayan escogido en las simulacion:",guiGetSafe("horizontes_text"))) The problem is when I modify this variable if I have already used this option in my program when I use it again the variable seems not be actualized even though if I call it on the R console using guiGetSafe("horizontes_text") I can see the change. If for example I change the without using this option in my program before the changes DO appear. And if I want the change in my variable to appear in the program having used the option before I have to close it and open it again. Does anybody know how can I have the changes in my variable incorporated in the program eventhough I have used the option before without opening and closing it again?. Thank you Felipe Parra [[alternative HTML version deleted]]